摘要
为确保工作面回采巷道支护安全可靠,利用钻孔窥视仪对预先施工的钻孔进行窥视探查,分析区域内岩层裂隙发育情况、煤岩层赋存情况、岩石破碎程度以及裂隙发育深度等特征,为进行支护方式的优化提供依据。经过对锚杆、锚索深度和锚固间排距的调整,提高围岩支护强度。根据矿压观测结果:巷道支护优化后10~25 d,顶底移近量趋于稳定。
In order to ensure the safety and reliability of the mining roadway support in the working face,the borehole peep instrument is used to peep the pre-constructed boreholes and analyze the development of rock fissures,the occurrence of coal strata and the degree of rock fragmentation in the area,as well as the characteristics of crack development depth,to provide a basis for the optimization of support mode.Through the adjustment of bolt,anchor cable depth and anchorage spacing,to improve the surrounding rock support strength.According to the observation results of mine pressure,after 10-25 days of roadway support optimization,the displacement of top and bottom tends to be stable.
作者
白艳飞
Bai Yanfei(Jinneng Holding Coal Industry Group Taishan Long'an Coal Mine,Shanxi Baode 036600)
出处
《山东煤炭科技》
2022年第3期26-28,31,共4页
Shandong Coal Science and Technology
关键词
顺槽
掘进
钻孔窥视
支护
优化
grooving
driving
drill hole peep
support
optimization
